To do list:

The following feature is not working or working well, I put the priority:
0) VIDEO playback -- Done
1) SD mount -- Done
2) Audio (Playback)-- Done
3) Bluetooth -- Done
4) Sensors (G-sensor, eCompass, light etc) Done
5) Display up side down (Done)
6) Power off charge -- Done
8) GPS (Done)
9) Video capture

I really don't have enough time to deal all those and I am going to release the device folder for lepan griffin that some developer may take some work on it.